.content {
    margin: 50px auto;
    padding: 15px;
    width: 700px;
    height: 200px;
    border: 2px solid black;
}

.pagination_p {
    position: fixed;
    bottom: 10px; /* 使其距离底部10px */
    left: 50%;
    transform: translateX(-50%); /* 水平剧中对齐 */
    display: flex;
    justify-content: center; /* 子元素剧中对其 */
}

/* pagination styling */
.pagination_p a {
    color: black;
    padding: 10px 18px;
    text-decoration: none;
}

/* pagination hover effect on non-active */
.pagination_p a:hover:not(.active) {
    background-color: #031F3B;
    color: white;
}

/* pagination hover effect on active */
.pagination_p a:nth-child(5) {
    background-color: green;
    color: white;
}

/* 不清楚下面这两条规则的作用，如果不需要可以删除 */
.pagination_p a:nth-child(1) {
    font-weight: bold;
}

.pagination_p a:nth-child(7) {
    font-weight: bold;
}